Enlarge an AVFifoBuffer.
In case of reallocation failure, the old FIFO is kept unchanged.
The new fifo size may be larger than the requested size.
@param f AVFifoBuffer to resize
@param additional_space the amount of space in bytes to allocate in addition to av_fifo_size()
@return <0 for failure, >=0 otherwise
Enlarge an AVFifoBuffer. In case of reallocation failure, the old FIFO is kept unchanged. The new fifo size may be larger than the requested size.
@param f AVFifoBuffer to resize @param additional_space the amount of space in bytes to allocate in addition to av_fifo_size() @return <0 for failure, >=0 otherwise